Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Gain access to PCB (use Insulation Mat as required)
Remove connector LV1 from the PCB
Remove connector LV1 from the PCB
Measurement:
Measure the resistance between the yellow wires on LV1 (pins 15 and 14).
The resistance should conform approximately to the table below:
The resistance should conform approximately to the table below:
Isolate as per TOPs P4
and refit as necessary